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Finding the Fourth Proportional to 235,873.20, 353,673.36 and 78,059.28

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Solution

The fourth proportional to 235,873.20, 353,673.36 and 78,059.28 is: 117,043.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,873.20 : 353,673.36 = 78,059.28 : x
  2. Step 2: Convert to fraction form
    235,873.20/353,673.36 = 78,059.28/x
  3. Step 3: Cross multiply
    235,873.20x = 353,673.36 × 78,059.28
  4. Step 4: Simplify right side
    235,873.20x = 27,607,487,836.78
  5. Step 5: Solve for x
    x = 27,607,487,836.78/235,873.20
  6. Step 6: Final answer
    x = 117,043.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.